BRYOZOA OF THE PHILIPPINE REGION 



217 



Genus TRICELLARIA Fleming, 1828 



The zoarium is articulated and biserial; the segments have 3 

 zooeeia at least. There are spines, a frontal avicularium, and a 

 marginal avicularium; the dorsal vibraculum alone is lacking. The 

 radicular dictella is placed on the proximal portion of the external 



Fiu. 77. — Genus Amastigia Busk, 1852 



A-D. Amastigia bencmunita Busk, 1885. A. Zoarium, natural .size- B. Seg- 

 ment showing the anterior face. (A, B, after Busk, 1885.) C. Anterior face, 

 X55. D. Basal surface. A transversely placed vibraculum is seen, X55. 

 (C, D, after Levinsen, 1909.) 



E. Amastigia kirkpairicki Levinsen Mss. Diagram showing bifurcation. 



F-J. Amastigia nuda Busk, 1852. F. Frontal view. G. Diagram of basal 

 surface; /. av., lateral avicularium; I, 5, marginal zooeeia; 3, median zooecium; 

 2, 4, submedian zooeeia. 11. Basal view of a 5-serial branch showing 4 basal 

 avicularia, and 2 ovicells on marginal zooeeia. I. Frontal view of part of a 

 zooecium with scutum. .1. Lateral view of two zooeeia with frontal avicularium 

 (paired). I E J, after Banner, 1923.) 



zooecium below the chitinous tube. The opesium is small and the 

 gymnocyst is long. 



Genotype. — Tricellaria (Cellaria) ternata Ellis and Solander, 1786. 

 Recent. 



Genus BUGULOPSIS VerriU, 1880 



The zoarium is articulated and biserial. In the ramification the 

 two zooeeia emitted by tiie intercalated zooecium are adjacent at 

 their base below the chitinous joints. Neither vibraculum nor scutum 

 nor adventitious avicularia. The radicular dietella is placed on the 

 proximal portion of the exterior zooecium below the. chitinous tube. 

 The opesium is longer than the gymnocyst. 



